EP 3551912 B1 20210421 - OIL SCRAPER RING FOR PISTON
Title (en)
OIL SCRAPER RING FOR PISTON
Title (de)
ÖLABSTREIFKOLBENRING
Title (fr)
SEGMENT RACLEUR POUR PISTON
Publication
Application
Priority
- DE 102016123548 A 20161206
- DE 2017100950 W 20171109
Abstract (en)
[origin: WO2018103779A1] The invention relates to an oil control ring (1) for an internal combustion engine, having two webs (3, 4) arranged axially one over the other in the region of the running surface (5, 6) of the oil control ring, wherein both webs form the running surface (5, 6) when in contact with a counter running surface (10) and the webs (3, 4) are provided with a profile (11, 13, 14) on the counter-running-surface side, which profile has an at least partial coating (13, 15) if necessary, wherein the two webs (3, 4) are provided with different web geometries in such a way that the lower web (4) takes on most of the scraping action in the downward stroke and the upper web (3) substantially floats on a residual oil film on the counter running surface (10) during the upward stroke.
IPC 8 full level
CPC (source: EP)
F16J 9/062 (2013.01); F16J 9/206 (2013.01)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
DE 102016123548 A1 20180607; EP 3551912 A1 20191016; EP 3551912 B1 20210421; WO 2018103779 A1 20180614
DOCDB simple family (application)
DE 102016123548 A 20161206; DE 2017100950 W 20171109; EP 17803769 A 20171109